Closure-locking means.



G. J. LJUNGGREN.

CLOSURE LOOKING MEANS.

APPLICATION FILED SEPT. 2, 1908.

1,006,242. Patented Oct. 17,1911.

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G. J. LJUNGGREN.

CLOSURE LOCKING MEANS.

APPLICATION FILED SEPT. 2, 190a.

Patented Oct. 17, 1911.

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CARL J. LJUNGGREN, OF PROVIDENCE, RHODE ISLAND.

CLOSURE-LOCKING MEANS.

Application filed September 2, 1908.

To all whom it may concern:

Be it known that I, CARL J. LJUNGGREN, a subject of the King of Sweden, residing at the city of Providence, in the county of Providence, State of Rhode Island, have invented certain new and useful Improve ments in ClosureLocking Means, of which the following is a specification.

The invention relates to closure locking means for vaults, gun breeches, man holes, port holes, and the like, and has for its essential objects strength, a minimum of parts, and cheapness of construction.

To the above ends primarily the invention consists broadly in the complementary use of inclined abutting surfaces upon the cooperative parts; and specifically, in the novel construction and arrangement of parts hereinafter set forth, and made the subject matter of the appended claims.

In the accompanying drawings whichform a part of this specification, and in which like reference characters indicate like parts throughout the views, Figures 1 and 2 are rear elevations respectively of the novel closure member and the stationary member, Fig. 3, a section of the interlocked members taken on a line corresponding to 00 w of Fig. 1, Fig. l, a side elevation of the closure member, Fig. 5, a rear elevation of the inter locked parts, Figs. 6 and 7 side and rear end elevations respectively of a modified form of closure member, and Fig. 8, a section of the modified closure member, and its inclosing member interlocked, taken on a section corresponding to line a: x of Fig. 7.

My invention comprises a closure member A, which is either a plug or door, and a receiving or stationary member adapted to inclose the same. The receiving member, breech, or jamb is in this instance a collar B fixed in a wall B. The mechanism for supporting, inserting, rotating, and Withdrawing the member A is well known in the art, and since it forms no part of the present invention is not herein illustrated.

The member A consists of a cylindrical body, a, provided with a plurality of concentric peripheral segments a interspaced from each other as at b. Each segment comprises a plurality of concentric radially graduated longitudinally inclined or conical stepped portions (6, a a That is, the peripheral bearing surfaces of the stepped portions are inclined or tapered toward the axis of the closure members. The forward Specification of Letters Patent.

Patented Oct. 17, 1911.

Serial No. 451,444.

end faces 6 of the segmentsa and the forward end faces I) of the portions 6 merge into a single surface, that is, they are flush with each other, so as to form an abutment e, 7), a short distance in from the outer end of the body a, as seen in Fig. 4.

The member B incloses a substantially cylindrical orifice 0 into which opens a circumferential series of radially graduated longitudinally inclined seats or recesses c, 0 0 corresponding in relative dimensions with the steps a, a a respectively. Longitudinally disposed entrance channels (1 of uniform depth throughout their length are located beside the recesses c and open into the orifice 0. The orifice 0 is of reduced diameter at its front end forming a flange or abutment f having an internal bearing face f The face 0 of the collar B is the inside face of the jamb.

The members A and B are interengaged as follows. The member A disposed as in Fig. 4 is inserted as a sliding fit into the member B from right to left as viewed in Fig. 3, the stepped portions a, a a entering respectively the recesses 0 0 and channel (Z, and the abutment e Z) abutting against the face 7 of the flange f. The member A is then turned in the direction of the arrow shown in Fig. 5, bringing stepped portions 64, a a into the channels 0, c 0 respectively. In this position the members are tightly and securely held against longitudinal movement in both directions under shock or pressure. A reversal of the described movements serve to disengage the members. Vhen the member A is employed as a vault door it is preferably supported and seated in the jamb from the inside of the safe in any usual convenient manner known in the art.

The invention may be embodied in a modified form such as in Fig. 6, wherein the inclined stepped portions are broken, by trans verse shoulders 6', into a plurality of peripheral rearwardly inclined or tapering surfaces, which intensifies the resistive power of the closure member against backward pressure.

that I claim is,

1. In a device of the type set forth, the combination with a stationary member, of a closure body comprising a plurality of radially graduated segments peripherally disposed, each segment comprising a plurality of conical stepped portions.

2. In a device of the type set forth, the combination with a stationary member, of a closure body comprising a plurality of concentric peripheral segments, each seg ment being provided with a plurality of concentric radially graduated stepped portions longitudinally conical with their forward end faces merging into a single surface.

3. In a device of the type set forth, the combination with a stationary member, of a closure body comprising a plurality of concentric peripheral segments, each segment being provided with a plurality of concentric radially graduated stepped portions longitudinally conical with their forward end faces merging into a single surface and forming an abutment at a distance from the end of the closure body.

4. In a device of the type set forth, the combination of a stationary body having a substantially cylindrical orifice into which open a circumferential series of radially graduated longitudinally inclined recesses, and a closure body having a plurality of concentric peripheral segments, each segment comprising a plurality of concentric radially graduated longitudinally conical stepped portions corresponding in relative dimensions with said recesses.

5. In a device of the type set forth, the combination of a stationary body having a substantially cylindrical orifice into which open a circumferential series of radially graduated longitudinally inclined recesses, and a closure body having a plurality of concentric peripheral segments, each segment comprising a plurality of concentric radially graduated longitudinally conical stepped portions corresponding in relative 'ripherally disposed, each segment comprisdimensions with said recesses, said stationary member having longitudinally dis posed entrance channels of uniform depth throughout their length disposed beside said recesses and opening into the cylindrical orifice of said stationary body.

6. In a device of the type set forth, the combination of a stationary body having a substantially cylindrical orifice into which open a circumferential series of radially graduated longitudinally inclined recesses, and a closure body having a plurality ofconcentric peripheral segments, each segment comprising a plurality of concentric radially graduated longitudinally conical stepped portions corresponding in relative dimensions with said recesses, said stationary member having longitudinally dis posed entrance channels of uniform depth throughout their length disposed beside said recesses and opening into the cylindrical orifice of said stationary body, said orifice being reduced in diameter at its forward end forming an abutment having an internal bearing face.

7. In a device of the type set forth, the combination with a stationary member, of a closure body comprising a plurality of concentric radially graduated segments peing a plurality of concentric conical stepped portions, said inclined stepped .portions having transverse shoulders forming peripheral rearwardly inclined surfaces. 4

In testimony whereof I affix my signature in presence of two witnesses.

CARL J. LJUNGGREN.

lVitnesses:

J. FREDERICK CARLSTEIT, AUGUsT GUNDELED.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

